I. Sir Thomas Hay of Errol, Constable of Scotland, died in the year 1406. He married in 1372, Elizabeth third daughter of King Robert II., by his first wife Elizabeth Mure; and had two sons, Sir William, who succeeded, and Gilbert Hay, who is designed of Dronlaw; also three daughters, the youngest of whom, Alicia, married Sir William Hay of Locharret.[9] II. Sir William Hay of Errol, who succeeded in 1406, died in 1436. By his wife Margaret, daughter of Sir Patrick Gray of Broxmouth, he had two sons, Gilbert, and William Hay of Urry, in the county of Kincardine. III. Gilbert Hay, eldest son of Sir William, was one of the hostages sent to England in 1412, and again in 1424, for the ransom of King James the First, who had been held in captivity for eighteen years. On the last occasion he is styled "Gilbertus Primogenitus et Hæres Willielmi Constabularii Scotiæ," his annual revenue being estimated equal to 800 marks; and at that time "Gilbert of the Haye, askyth conduct for 3 servants." (Rymer's Foedera, vol. x. p. 327). In 1426 he had a safe conduct. He died in England soon after 1426, leaving, by his wife Alicia, daughter of Sir William Hay of Yester, two sons, William and Gilbert. IV. Sir William Hay succeeded his grandfather in 1436, and was created Earl of Errol in the year 1452-3. He married Beatrix Douglas, daughter of James third Lord Dalkeith. His brother Gilbert, who succeeded his uncle William Hay of Urry, had a charter of the lands of Urry, in the county of Kincardine, 12th August 1467; and died before September 1487. The Earl of Errol, who died about 1460, was succeeded by his eldest son, V. Nicholas, second Earl of Errol. He died without issue in 1470, and was succeeded by his brother, VI. William, third Earl of Errol, who survived till 1506.